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Zhejiang Daxue xuebao. Lixue ban, 2019 采用高效液相色谱法（HPLC）、气相色谱质谱联用法（GC-MS/MS）以及液相色谱质谱联用法（HPLCMS/ MS）测定动物源性食品中镇静剂类药物地西泮的残留量。将样品均质粉碎后，经乙腈提取，固相萃取小柱净化后上机检测，外标法定量。实验证明，当固相萃取的洗脱液中甲醇与乙酸溶液的体积比为70：30 时，洗脱效率最高。在不同仪器条件下，地西泮在各自浓度范围内的线性关系良好，相关系数（r2） 均大于0.999，回收率在 84.6%~ 101.7%，相对标准偏差（RSD） 在0.52%~9.44% （n=3 ...
DINGYuqi(丁宇琦) +3 more
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Zhejiang Daxue xuebao. Lixue ban, 2013 为快速、准确监测环境土壤或底泥中苯系物的含量，建立了一种顶空气相色谱法同时测定土壤或底泥中8种苯系物的方法.采用Nukol毛细管气相色谱柱实现了各组分的良好分离，优化了色谱条件，顶空进样条件.在优化条件下，8种苯系物在13 min内能实现完全分离，在10~500 µg • kg-1浓度范围内组分含量与峰面积呈线性相关，相关系数为0.990 6~0.995 7，检出限为2 µg • kg-1，回收率为94%~114%，相对标准偏差为2.4%~5.2%(n =3).结果表明，建立的顶空气相色谱法简单快速 ...
HUHong-mei(胡红美) +4 more
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Zhejiang Daxue xuebao. Lixue ban, 2015 采用顶空蒸汽蒸馏萃取法提取龙井茶的香气成分，以气相色谱-质谱联用(GC-MS)结合气相色谱-嗅闻(GC-O)技术，对龙井茶的特征香气成分进行了分离鉴定.共鉴出75种香气成分，其中醇类24种，醛类8种，酮类10种, 酯类6种，杂环类16种，其他11种.采用气相色谱-嗅闻(GC-O)结合芳香萃取物稀释分析(AEDA)技术分离出49种活性香气成分，其中对龙井茶香气贡献较大的有橙花叔醇、二氢猕猴桃内酯、2-乙基吡嗪、2-乙酰基呋喃、芳樟醇、1-乙基-2-甲酰基吡咯、环氧芳樟醇、水杨酸甲酯、苯甲醇、苯乙醇、吲哚 ...
XIAOZuobin(肖作兵) +5 more
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Zhejiang Daxue xuebao. Lixue ban, 2006 采用超临界CO2流体萃取(SFE)和气相色谱\质谱联用提取测定了烟丝中的挥发性成分.对超临界萃取过程中的影响因素包括萃取压力、温度、萃取夹带剂等条件结合萃取物测定得到的气相色谱-质谱图进行综合考察，确定了适宜的萃取条件.与传统的蒸馏萃取法比较，超临界CO2流体萃取提取物中含较多的松油醇、烷烃、烟碱等物质.
XUZi-gang(徐子刚), ZHENGLin(郑琳)
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Research progress on detection methods of N-dimethylnitrosamine in foods [PDF]
, 2023 N-dimethylnitrosamine is one of the most toxic nitrosamine compounds and can be produced in the process of food processing or storage. The detection methods are various with tedious operation and low accuracy. QuEChERS pretreatment combined with GC/LC-MS
LIU Wei +7 more
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Analysis of the aromatic compositions in Longjing Teas(龙井茶的香气成分分析与比较)
Zhejiang Daxue xuebao. Lixue ban, 2013 通过蒸馏萃取(SDE)提取6种龙井茶（西湖龙井商品1、西湖龙井商品2、西湖龙井评比优质品、龙井村、钱塘、龙坞）的香气成分，采用色相色谱(GC)和气相色谱质谱联用(GC/MS)分析鉴定香气成分，分离出100个峰，鉴定出62种香气成分，分别占香气总量的41.73%，32.11%，24.26%，29.73%，22.13%，33.36%.分析比较6种茶香气总量和各成分含量的差异，结果显示，6个龙井茶样的香气总量和成分含量差距较大，以龙井村产区的龙井茶香气总量最多，钱塘和龙坞香气总量相对较少 ...
SUNYan(孙彦) +2 more
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A study of identification for various wines by GC-MS(葡萄酒类别的色谱界定方法研究)
Zhejiang Daxue xuebao. Lixue ban, 2001 本文从气相色谱法分析检测葡萄酒的条件优化入手，得到具有良好分离效果的色谱柱及最佳色谱条件，用毛细管柱和GC-MS联用的方法分析了不同品牌葡萄酒的特征组分及相互之间的差别，并对白酒和黄酒酒质进行侧而对比，从而初步得出鉴别葡萄酒品质的依据.
GUOWei-qiang(郭伟强), QIFan(齐凡)
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Influence of Halogenated Hydroxyl-Alkanes Inhalation Anesthetic on the Determination of Ethanol Content in Blood [PDF]
, 2020 Objective To study the influence of halogenated hydroxyl-alkanes inhalation anesthetic on the determination of ethanol content in blood. Methods Halogenated hydroxyl-alkanes were analyzed by headspace gas chromatography with double column confirmatory ...
XIE Bing , YAN Wen- jing, MENG Xian- yue, et al.
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Simultaneous Determination of Pyridine, Aniline and Nitrobenzene in Printing and Dyeing Wastewater by Headspace Gas Chromatography-Mass Spectrometry [PDF]
, 2023 BACKGROUNDPyridine, aniline, and nitrobenzene are important chemical raw materials with low boiling point and strong polarity. They are highly susceptible to enter environmental water and cause pollution.
Guoyong LU +5 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The design of nanoparticles confined in hollow N‐doped carbon structures is crucial for improving the oxygen reduction reaction (ORR) kinetics, yet achieving this remains a significant challenge. In this work, hollow porous nitrogen‐doped carbon encapsulated FeP/Fe2P (H‐FeP/Fe2P) were successfully constructed via a templating method combined ...
Li‐Xia Wang +8 more
wiley +1 more source